Actuator Control; Outdoor Fan Motor Control - Mitsubishi Electric SUZ-KA25VA Technical & Service Manual

10

ACTUATOR CONTROL

SUZ-KA25VA(H).TH SUZ-KA35VA(H).TH SUZ-KA50VA

10-1. Outdoor fan motor control

The fan motor turns ON/OFF, interlocking with the compressor.
[ON] The fan motor turns ON 5 seconds before the compressor starts up.
[OFF] The fan motor turns OFF 15 seconds after the compressor has stopped running.
Compressor
Outdoor fan
10-2. R.V. coil control
Heating . . . . . . . . . . . . . . . . ON
Cooling. . . . . . . . . . . . . . . . . OFF
Dry . . . . . . . . . . . . . . . . . . . . OFF
NOTE: The 4-way valve reverses for 5 seconds right before start-up of the compressor.
10-3. Relation between main sensor and actuator
SUZ-KA25VA.TH SUZ-KA35VA.TH SUZ-KA25VAH.TH SUZ-KA35VAH.TH
Sensor
Discharge temperature thermistor
Indoor pipe temperature thermistor
Defrost thermistor
Fin temperature thermistor
Ambient temperature thermistor
SUZ-KA50VA .TH SUZ-KA60VA
(1)
Sensor
Discharge temperature thermistor
Indoor pipe temperature thermistor
Defrost thermistor
Fin temperature thermistor
Ambient temperature thermistor
Outdoor heat exchanger temperature
5 seconds
ON
OFF
ON
OFF
<COOL>
5 seconds
ON
Compressor
OFF
ON
R.V.coil
ON or OFF
OFF
ON
Outdoor fan
OFF
motor
Purpose
Protection
Cooling : Coil frost prevention
Heating : High pressure protection
Cooling : High pressure protection
Heating : Defrosting
Protection
Cooling : Low ambient temperature operation
Heating:Defrosting(Heater)
.TH SUZ-KA71VA
(1)
Purpose
Protection
Cooling : Coil frost prevention
Heating : High pressure protection
Heating : Defrosting
Protection
Protection
Cooling : High pressure protection
.TH SUZ-KA60VA
(1)
15 seconds
<HEAT>
5 seconds
ON or OFF
Outdoor
Compressor LEV
fan motor
.TH
(1)
Actuator
Compressor LEV
50
.TH SUZ-KA71VA
(1)
Actuator
Indoor
RV-coil
fan motor
4-way
Outdoor
fan motor valve
.TH
(1)
Defrost
heater